Seat frame



FIG. 1 is a top perspective view of a seat frame, showing our newdesign;

FIG. 2 is a side elevational view, the opposite side being a mirrorimage thereof;

FIG. 3 is a top plan view; and

FIG. 4 is a bottom perspective view thereof.

The broken lines are for illustrative purposes only.

The ornamental design for a seat frame, as shown and described.